Merge pull request 'Refactor error management in API part' (#10) from error-refactoring into master

Reviewed-on: https://git.deuxfleurs.fr/Deuxfleurs/garage/pulls/10
author: Alex <alex@adnab.me> 2020-11-08 18:04:52 +0100
committer: Alex <alex@adnab.me> 2020-11-08 18:04:52 +0100
commit: 045009da9b7ac4198574bd5aa256c11cfe4ae469 (patch)
tree: d3014cc2739c5a1bce62ff35efc8417b79ff46ef
parent: 54166d2a09f488bff080469160d4df6a78db1a3f (diff)
parent: a50fa70d45f8b5af68d23d60c3bac2af4ecceb58 (diff)
download: garage-045009da9b7ac4198574bd5aa256c11cfe4ae469.tar.gz
garage-045009da9b7ac4198574bd5aa256c11cfe4ae469.zip
16 files changed, 193 insertions, 131 deletions
diff --git a/src/api/Cargo.toml b/src/api/Cargo.toml
index 4e0599d5..578cb9d5 100644
--- a/src/api/Cargo.toml
+++ b/src/api/Cargo.toml
@@ -17,6 +17,7 @@ garage_util = { version = "0.1", path = "../util" }
 garage_table = { version = "0.1.1", path = "../table" }
 garage_model = { version = "0.1.1", path = "../model" }
 
+err-derive = "0.2.3"
 bytes = "0.4"
 hex = "0.3"
 log = "0.4"
diff --git a/src/api/api_server.rs b/src/api/api_server.rs
index 9dc74dac..ec02572d 100644
--- a/src/api/api_server.rs
+++ b/src/api/api_server.rs
@@ -7,10 +7,11 @@ use hyper::server::conn::AddrStream;
 use hyper::service::{make_service_fn, service_fn};
 use hyper::{Body, Method, Request, Response, Server};
 
-use garage_util::error::Error;
+use garage_util::error::Error as GarageError;
 
 use garage_model::garage::Garage;
 
+use crate::error::*;
 use crate::signature::check_signature;
 
 use crate::s3_copy::*;
@@ -22,14 +23,14 @@ use crate::s3_put::*;
 pub async fn run_api_server(
 	garage: Arc<Garage>,
 	shutdown_signal: impl Future<Output = ()>,
-) -> Result<(), Error> {
+) -> Result<(), GarageError> {
 	let addr = &garage.config.s3_api.api_bind_addr;
 
 	let service = make_service_fn(|conn: &AddrStream| {
 		let garage = garage.clone();
 		let client_addr = conn.remote_addr();
 		async move {
-			Ok::<_, Error>(service_fn(move |req: Request<Body>| {
+			Ok::<_, GarageError>(service_fn(move |req: Request<Body>| {
 				let garage = garage.clone();
 				handler(garage, req, client_addr)
 			}))
@@ -49,7 +50,7 @@ async fn handler(
 	garage: Arc<Garage>,
 	req: Request<Body>,
 	addr: SocketAddr,
-) -> Result<Response<Body>, Error> {
+) -> Result<Response<Body>, GarageError> {
 	info!("{} {} {}", addr, req.method(), req.uri());
 	debug!("{:?}", req);
 	match handler_inner(garage, req).await {
@@ -131,10 +132,7 @@ async fn handler_inner(garage: Arc<Garage>, req: Request<Body>) -> Result<Respon
 							source_bucket
 						)));
 					}
-					let source_key = match source_key {
-						None => return Err(Error::BadRequest(format!("No source key specified"))),
-						Some(x) => x,
-					};
+					let source_key = source_key.ok_or_bad_request("No source key specified")?;
 					Ok(handle_copy(garage, &bucket, &key, &source_bucket, &source_key).await?)
 				} else {
 					// PutObject query
@@ -205,9 +203,8 @@ async fn handler_inner(garage: Arc<Garage>, req: Request<Body>) -> Result<Respon
 				let max_keys = params
 					.get("max-keys")
 					.map(|x| {
-						x.parse::<usize>().map_err(|e| {
-							Error::BadRequest(format!("Invalid value for max-keys: {}", e))
-						})
+						x.parse::<usize>()
+							.ok_or_bad_request("Invalid value for max-keys")
 					})
 					.unwrap_or(Ok(1000))?;
 				let prefix = params.get("prefix").map(|x| x.as_str()).unwrap_or(&"");
diff --git a/src/api/error.rs b/src/api/error.rs
new file mode 100644
index 00000000..ddb021db
--- /dev/null
+++ b/src/api/error.rs
@@ -0,0 +1,116 @@
+use err_derive::Error;
+use hyper::StatusCode;
+
+use garage_util::error::Error as GarageError;
+
+#[derive(Debug, Error)]
+pub enum Error {
+	// Category: internal error
+	#[error(display = "Internal error: {}", _0)]
+	InternalError(#[error(source)] GarageError),
+
+	#[error(display = "Internal error (Hyper error): {}", _0)]
+	Hyper(#[error(source)] hyper::Error),
+
+	#[error(display = "Internal error (HTTP error): {}", _0)]
+	HTTP(#[error(source)] http::Error),
+
+	// Category: cannot process
+	#[error(display = "Forbidden: {}", _0)]
+	Forbidden(String),
+
+	#[error(display = "Not found")]
+	NotFound,
+
+	// Category: bad request
+	#[error(display = "Invalid UTF-8: {}", _0)]
+	InvalidUTF8(#[error(source)] std::str::Utf8Error),
+
+	#[error(display = "Invalid XML: {}", _0)]
+	InvalidXML(#[error(source)] roxmltree::Error),
+
+	#[error(display = "Invalid header value: {}", _0)]
+	InvalidHeader(#[error(source)] hyper::header::ToStrError),
+
+	#[error(display = "Invalid HTTP range: {:?}", _0)]
+	InvalidRange(#[error(from)] http_range::HttpRangeParseError),
+
+	#[error(display = "Bad request: {}", _0)]
+	BadRequest(String),
+}
+
+impl Error {
+	pub fn http_status_code(&self) -> StatusCode {
+		match self {
+			Error::NotFound => StatusCode::NOT_FOUND,
+			Error::Forbidden(_) => StatusCode::FORBIDDEN,
+			Error::InternalError(GarageError::RPC(_)) => StatusCode::SERVICE_UNAVAILABLE,
+			Error::InternalError(_) | Error::Hyper(_) | Error::HTTP(_) => {
+				StatusCode::INTERNAL_SERVER_ERROR
+			}
+			_ => StatusCode::BAD_REQUEST,
+		}
+	}
+}
+
+pub trait OkOrBadRequest {
+	type S2;
+	fn ok_or_bad_request(self, reason: &'static str) -> Self::S2;
+}
+
+impl<T, E> OkOrBadRequest for Result<T, E>
+where
+	E: std::fmt::Display,
+{
+	type S2 = Result<T, Error>;
+	fn ok_or_bad_request(self, reason: &'static str) -> Result<T, Error> {
+		match self {
+			Ok(x) => Ok(x),
+			Err(e) => Err(Error::BadRequest(format!("{}: {}", reason, e))),
+		}
+	}
+}
+
+impl<T> OkOrBadRequest for Option<T> {
+	type S2 = Result<T, Error>;
+	fn ok_or_bad_request(self, reason: &'static str) -> Result<T, Error> {
+		match self {
+			Some(x) => Ok(x),
+			None => Err(Error::BadRequest(format!("{}", reason))),
+		}
+	}
+}
+
+pub trait OkOrInternalError {
+	type S2;
+	fn ok_or_internal_error(self, reason: &'static str) -> Self::S2;
+}
+
+impl<T, E> OkOrInternalError for Result<T, E>
+where
+	E: std::fmt::Display,
+{
+	type S2 = Result<T, Error>;
+	fn ok_or_internal_error(self, reason: &'static str) -> Result<T, Error> {
+		match self {
+			Ok(x) => Ok(x),
+			Err(e) => Err(Error::InternalError(GarageError::Message(format!(
+				"{}: {}",
+				reason, e
+			)))),
+		}
+	}
+}
+
+impl<T> OkOrInternalError for Option<T> {
+	type S2 = Result<T, Error>;
+	fn ok_or_internal_error(self, reason: &'static str) -> Result<T, Error> {
+		match self {
+			Some(x) => Ok(x),
+			None => Err(Error::InternalError(GarageError::Message(format!(
+				"{}",
+				reason
+			)))),
+		}
+	}
+}
diff --git a/src/api/lib.rs b/src/api/lib.rs
index df2fd045..9bb07925 100644
--- a/src/api/lib.rs
+++ b/src/api/lib.rs
@@ -1,6 +1,8 @@
 #[macro_use]
 extern crate log;
 
+pub mod error;
+
 pub mod encoding;
 
 pub mod api_server;
diff --git a/src/api/s3_copy.rs b/src/api/s3_copy.rs
index db790d95..4280f4bf 100644
--- a/src/api/s3_copy.rs
+++ b/src/api/s3_copy.rs
@@ -6,13 +6,14 @@ use hyper::{Body, Response};
 
 use garage_table::*;
 use garage_util::data::*;
-use garage_util::error::Error;
 
 use garage_model::block_ref_table::*;
 use garage_model::garage::Garage;
 use garage_model::object_table::*;
 use garage_model::version_table::*;
 
+use crate::error::*;
+
 pub async fn handle_copy(
 	garage: Arc<Garage>,
 	dest_bucket: &str,
diff --git a/src/api/s3_delete.rs b/src/api/s3_delete.rs
index 42216f51..33e47c17 100644
--- a/src/api/s3_delete.rs
+++ b/src/api/s3_delete.rs
@@ -4,12 +4,12 @@ use std::sync::Arc;
 use hyper::{Body, Request, Response};
 
 use garage_util::data::*;
-use garage_util::error::Error;
 
 use garage_model::garage::Garage;
 use garage_model::object_table::*;
 
 use crate::encoding::*;
+use crate::error::*;
 
 async fn handle_delete_internal(
 	garage: &Garage,
@@ -85,8 +85,7 @@ pub async fn handle_delete_objects(
 ) -> Result<Response<Body>, Error> {
 	let body = hyper::body::to_bytes(req.into_body()).await?;
 	let cmd_xml = roxmltree::Document::parse(&std::str::from_utf8(&body)?)?;
-	let cmd = parse_delete_objects_xml(&cmd_xml)
-		.map_err(|e| Error::BadRequest(format!("Invald delete XML query: {}", e)))?;
+	let cmd = parse_delete_objects_xml(&cmd_xml).ok_or_bad_request("Invalid delete XML query")?;
 
 	let mut retxml = String::new();
 	writeln!(&mut retxml, r#"<?xml version="1.0" encoding="UTF-8"?>"#).unwrap();
diff --git a/src/api/s3_get.rs b/src/api/s3_get.rs
index 68558dbe..71c656f2 100644
--- a/src/api/s3_get.rs
+++ b/src/api/s3_get.rs
@@ -5,13 +5,13 @@ use futures::stream::*;
 use hyper::body::Bytes;
 use hyper::{Body, Request, Response, StatusCode};
 
-use garage_util::error::Error;
-
 use garage_table::EmptyKey;
 
 use garage_model::garage::Garage;
 use garage_model::object_table::*;
 
+use crate::error::*;
+
 fn object_headers(
 	version: &ObjectVersion,
 	version_meta: &ObjectVersionMeta,
@@ -111,11 +111,8 @@ pub async fn handle_get(
 
 	let range = match req.headers().get("range") {
 		Some(range) => {
-			let range_str = range
-				.to_str()
-				.map_err(|e| Error::BadRequest(format!("Invalid range header: {}", e)))?;
-			let mut ranges = http_range::HttpRange::parse(range_str, last_v_meta.size)
-				.map_err(|_e| Error::BadRequest(format!("Invalid range")))?;
+			let range_str = range.to_str()?;
+			let mut ranges = http_range::HttpRange::parse(range_str, last_v_meta.size)?;
 			if ranges.len() > 1 {
 				return Err(Error::BadRequest(format!("Multiple ranges not supported")));
 			} else {
@@ -210,7 +207,9 @@ pub async fn handle_get_range(
 				let body: Body = Body::from(bytes[begin as usize..end as usize].to_vec());
 				Ok(resp_builder.body(body)?)
 			} else {
-				Err(Error::Message(format!("Internal error: requested range not present in inline bytes when it should have been")))
+				None.ok_or_internal_error(
+					"Requested range not present in inline bytes when it should have been",
+				)
 			}
 		}
 		ObjectVersionData::FirstBlock(_meta, _first_block_hash) => {
diff --git a/src/api/s3_put.rs b/src/api/s3_put.rs
index 0926ba89..ea09524c 100644
--- a/src/api/s3_put.rs
+++ b/src/api/s3_put.rs
@@ -9,8 +9,9 @@ use sha2::{Digest as Sha256Digest, Sha256};
 
 use garage_table::*;
 use garage_util::data::*;
-use garage_util::error::Error;
+use garage_util::error::Error as GarageError;
 
+use crate::error::*;
 use garage_model::block::INLINE_THRESHOLD;
 use garage_model::block_ref_table::*;
 use garage_model::garage::Garage;
@@ -85,7 +86,7 @@ pub async fn handle_put(
 	// Validate MD5 sum against content-md5 header and sha256sum against signed content-sha256
 	if let Some(expected_sha256) = content_sha256 {
 		if expected_sha256 != sha256sum {
-			return Err(Error::Message(format!(
+			return Err(Error::BadRequest(format!(
 				"Unable to validate x-amz-content-sha256"
 			)));
 		} else {
@@ -94,7 +95,7 @@ pub async fn handle_put(
 	}
 	if let Some(expected_md5) = content_md5 {
 		if expected_md5.trim_matches('"') != md5sum {
-			return Err(Error::Message(format!("Unable to validate content-md5")));
+			return Err(Error::BadRequest(format!("Unable to validate content-md5")));
 		} else {
 			trace!("Successfully validated content-md5");
 		}
@@ -184,7 +185,7 @@ async fn put_block_meta(
 	offset: u64,
 	hash: Hash,
 	size: u64,
-) -> Result<(), Error> {
+) -> Result<(), GarageError> {
 	// TODO: don't clone, restart from empty block list ??
 	let mut version = version.clone();
 	version
@@ -225,7 +226,7 @@ impl BodyChunker {
 			buf: VecDeque::new(),
 		}
 	}
-	async fn next(&mut self) -> Result<Option<Vec<u8>>, Error> {
+	async fn next(&mut self) -> Result<Option<Vec<u8>>, GarageError> {
 		while !self.read_all && self.buf.len() < self.block_size {
 			if let Some(block) = self.body.next().await {
 				let bytes = block?;
@@ -305,10 +306,9 @@ pub async fn handle_put_part(
 	// Check parameters
 	let part_number = part_number_str
 		.parse::<u64>()
-		.map_err(|e| Error::BadRequest(format!("Invalid part number: {}", e)))?;
+		.ok_or_bad_request("Invalid part number")?;
 
-	let version_uuid =
-		uuid_from_str(upload_id).map_err(|_| Error::BadRequest(format!("Invalid upload ID")))?;
+	let version_uuid = decode_upload_id(upload_id)?;
 
 	let content_md5 = match req.headers().get("content-md5") {
 		Some(x) => Some(x.to_str()?.to_string()),
@@ -359,7 +359,7 @@ pub async fn handle_put_part(
 	// Validate MD5 sum against content-md5 header and sha256sum against signed content-sha256
 	if let Some(expected_sha256) = content_sha256 {
 		if expected_sha256 != sha256sum {
-			return Err(Error::Message(format!(
+			return Err(Error::BadRequest(format!(
 				"Unable to validate x-amz-content-sha256"
 			)));
 		} else {
@@ -368,7 +368,7 @@ pub async fn handle_put_part(
 	}
 	if let Some(expected_md5) = content_md5 {
 		if expected_md5.trim_matches('"') != md5sum {
-			return Err(Error::Message(format!("Unable to validate content-md5")));
+			return Err(Error::BadRequest(format!("Unable to validate content-md5")));
 		} else {
 			trace!("Successfully validated content-md5");
 		}
@@ -384,8 +384,7 @@ pub async fn handle_complete_multipart_upload(
 	key: &str,
 	upload_id: &str,
 ) -> Result<Response<Body>, Error> {
-	let version_uuid =
-		uuid_from_str(upload_id).map_err(|_| Error::BadRequest(format!("Invalid upload ID")))?;
+	let version_uuid = decode_upload_id(upload_id)?;
 
 	let bucket = bucket.to_string();
 	let key = key.to_string();
@@ -469,8 +468,7 @@ pub async fn handle_abort_multipart_upload(
 	key: &str,
 	upload_id: &str,
 ) -> Result<Response<Body>, Error> {
-	let version_uuid =
-		uuid_from_str(upload_id).map_err(|_| Error::BadRequest(format!("Invalid upload ID")))?;
+	let version_uuid = decode_upload_id(upload_id)?;
 
 	let object = garage
 		.object_table
@@ -532,10 +530,10 @@ fn get_headers(req: &Request<Body>) -> Result<ObjectVersionHeaders, Error> {
 	})
 }
 
-fn uuid_from_str(id: &str) -> Result<UUID, ()> {
-	let id_bin = hex::decode(id).map_err(|_| ())?;
+fn decode_upload_id(id: &str) -> Result<UUID, Error> {
+	let id_bin = hex::decode(id).ok_or_bad_request("Invalid upload ID")?;
 	if id_bin.len() != 32 {
-		return Err(());
+		return None.ok_or_bad_request("Invalid upload ID");
 	}
 	let mut uuid = [0u8; 32];
 	uuid.copy_from_slice(&id_bin[..]);
diff --git a/src/api/signature.rs b/src/api/signature.rs
index 6e23afda..402b1881 100644
--- a/src/api/signature.rs
+++ b/src/api/signature.rs
@@ -7,12 +7,12 @@ use sha2::{Digest, Sha256};
 
 use garage_table::*;
 use garage_util::data::Hash;
-use garage_util::error::Error;
 
 use garage_model::garage::Garage;
 use garage_model::key_table::*;
 
 use crate::encoding::uri_encode;
+use crate::error::*;
 
 const SHORT_DATE: &str = "%Y%m%d";
 const LONG_DATETIME: &str = "%Y%m%dT%H%M%SZ";
@@ -42,9 +42,9 @@ pub async fn check_signature(
 
 	let date = headers
 		.get("x-amz-date")
-		.ok_or(Error::BadRequest("Missing X-Amz-Date field".into()))?;
+		.ok_or_bad_request("Missing X-Amz-Date field")?;
 	let date: NaiveDateTime = NaiveDateTime::parse_from_str(date, LONG_DATETIME)
-		.map_err(|e| Error::BadRequest(format!("Invalid date: {}", e)))?
+		.ok_or_bad_request("Invalid date")?
 		.into();
 	let date: DateTime<Utc> = DateTime::from_utc(date, Utc);
 
@@ -90,7 +90,7 @@ pub async fn check_signature(
 		&garage.config.s3_api.s3_region,
 		"s3",
 	)
-	.map_err(|e| Error::Message(format!("Unable to build signing HMAC: {}", e)))?;
+	.ok_or_internal_error("Unable to build signing HMAC")?;
 	hmac.input(string_to_sign.as_bytes());
 	let signature = hex::encode(hmac.result().code());
 
@@ -104,9 +104,8 @@ pub async fn check_signature(
 	let content_sha256 = if authorization.content_sha256 == "UNSIGNED-PAYLOAD" {
 		None
 	} else {
-		let bytes = hex::decode(authorization.content_sha256).or(Err(Error::BadRequest(
-			format!("Invalid content sha256 hash"),
-		)))?;
+		let bytes = hex::decode(authorization.content_sha256)
+			.ok_or_bad_request("Invalid content sha256 hash")?;
 		let mut hash = [0u8; 32];
 		if bytes.len() != 32 {
 			return Err(Error::BadRequest(format!("Invalid content sha256 hash")));
@@ -132,7 +131,7 @@ fn parse_authorization(
 ) -> Result<Authorization, Error> {
 	let first_space = authorization
 		.find(' ')
-		.ok_or(Error::BadRequest("Authorization field too short".into()))?;
+		.ok_or_bad_request("Authorization field to short")?;
 	let (auth_kind, rest) = authorization.split_at(first_space);
 
 	if auth_kind != "AWS4-HMAC-SHA256" {
@@ -142,41 +141,32 @@ fn parse_authorization(
 	let mut auth_params = HashMap::new();
 	for auth_part in rest.split(',') {
 		let auth_part = auth_part.trim();
-		let eq = auth_part.find('=').ok_or(Error::BadRequest(format!(
-			"Missing =value in authorization field {}",
-			auth_part
-		)))?;
+		let eq = auth_part
+			.find('=')
+			.ok_or_bad_request("Field without value in authorization header")?;
 		let (key, value) = auth_part.split_at(eq);
 		auth_params.insert(key.to_string(), value.trim_start_matches('=').to_string());
 	}
 
 	let cred = auth_params
 		.get("Credential")
-		.ok_or(Error::BadRequest(format!(
-			"Could not find Credential in Authorization field"
-		)))?;
+		.ok_or_bad_request("Could not find Credential in Authorization field")?;
 	let (key_id, scope) = parse_credential(cred)?;
 
 	let content_sha256 = headers
 		.get("x-amz-content-sha256")
-		.ok_or(Error::BadRequest(
-			"Missing X-Amz-Content-Sha256 field".into(),
-		))?;
+		.ok_or_bad_request("Missing X-Amz-Content-Sha256 field")?;
 
 	let auth = Authorization {
 		key_id,
 		scope,
 		signed_headers: auth_params
 			.get("SignedHeaders")
-			.ok_or(Error::BadRequest(format!(
-				"Could not find SignedHeaders in Authorization field"
-			)))?
+			.ok_or_bad_request("Could not find SignedHeaders in Authorization field")?
 			.to_string(),
 		signature: auth_params
 			.get("Signature")
-			.ok_or(Error::BadRequest(format!(
-				"Could not find Signature in Authorization field"
-			)))?
+			.ok_or_bad_request("Could not find Signature in Authorization field")?
 			.to_string(),
 		content_sha256: content_sha256.to_string(),
 	};
@@ -186,9 +176,7 @@ fn parse_authorization(
 fn parse_query_authorization(headers: &HashMap<String, String>) -> Result<Authorization, Error> {
 	let algo = headers
 		.get("x-amz-algorithm")
-		.ok_or(Error::BadRequest(format!(
-			"X-Amz-Algorithm not found in query parameters"
-		)))?;
+		.ok_or_bad_request("X-Amz-Algorithm not found in query parameters")?;
 	if algo != "AWS4-HMAC-SHA256" {
 		return Err(Error::BadRequest(format!(
 			"Unsupported authorization method"
@@ -197,20 +185,14 @@ fn parse_query_authorization(headers: &HashMap<String, String>) -> Result<Author
 
 	let cred = headers
 		.get("x-amz-credential")
-		.ok_or(Error::BadRequest(format!(
-			"X-Amz-Credential not found in query parameters"
-		)))?;
+		.ok_or_bad_request("X-Amz-Credential not found in query parameters")?;
 	let (key_id, scope) = parse_credential(cred)?;
 	let signed_headers = headers
 		.get("x-amz-signedheaders")
-		.ok_or(Error::BadRequest(format!(
-			"X-Amz-SignedHeaders not found in query parameters"
-		)))?;
+		.ok_or_bad_request("X-Amz-SignedHeaders not found in query parameters")?;
 	let signature = headers
 		.get("x-amz-signature")
-		.ok_or(Error::BadRequest(format!(
-			"X-Amz-Signature not found in query parameters"
-		)))?;
+		.ok_or_bad_request("X-Amz-Signature not found in query parameters")?;
 	let content_sha256 = headers
 		.get("x-amz-content-sha256")
 		.map(|x| x.as_str())
@@ -226,9 +208,9 @@ fn parse_query_authorization(headers: &HashMap<String, String>) -> Result<Author
 }
 
 fn parse_credential(cred: &str) -> Result<(String, String), Error> {
-	let first_slash = cred.find('/').ok_or(Error::BadRequest(format!(
-		"Credentials does not contain / in authorization field"
-	)))?;
+	let first_slash = cred
+		.find('/')
+		.ok_or_bad_request("Credentials does not contain / in authorization field")?;
 	let (key_id, scope) = cred.split_at(first_slash);
 	Ok((
 		key_id.to_string(),
diff --git a/src/garage/admin_rpc.rs b/src/garage/admin_rpc.rs
index 1dd118ac..b29f2f77 100644
--- a/src/garage/admin_rpc.rs
+++ b/src/garage/admin_rpc.rs
@@ -55,7 +55,7 @@ impl AdminRpcHandler {
 					AdminRPC::BucketOperation(bo) => self2.handle_bucket_cmd(bo).await,
 					AdminRPC::KeyOperation(ko) => self2.handle_key_cmd(ko).await,
 					AdminRPC::LaunchRepair(opt) => self2.handle_launch_repair(opt).await,
-					_ => Err(Error::BadRequest(format!("Invalid RPC"))),
+					_ => Err(Error::BadRPC(format!("Invalid RPC"))),
 				}
 			}
 		});
@@ -81,7 +81,7 @@ impl AdminRpcHandler {
 			BucketOperation::Create(query) => {
 				let bucket = self.garage.bucket_table.get(&EmptyKey, &query.name).await?;
 				if bucket.as_ref().filter(|b| !b.deleted).is_some() {
-					return Err(Error::BadRequest(format!(
+					return Err(Error::BadRPC(format!(
 						"Bucket {} already exists",
 						query.name
 					)));
@@ -104,13 +104,10 @@ impl AdminRpcHandler {
 					.get_range(&query.name, None, Some(()), 10)
 					.await?;
 				if !objects.is_empty() {
-					return Err(Error::BadRequest(format!(
-						"Bucket {} is not empty",
-						query.name
-					)));
+					return Err(Error::BadRPC(format!("Bucket {} is not empty", query.name)));
 				}
 				if !query.yes {
-					return Err(Error::BadRequest(format!(
+					return Err(Error::BadRPC(format!(
 						"Add --yes flag to really perform this operation"
 					)));
 				}
@@ -199,7 +196,7 @@ impl AdminRpcHandler {
 			KeyOperation::Delete(query) => {
 				let key = self.get_existing_key(&query.key_id).await?;
 				if !query.yes {
-					return Err(Error::BadRequest(format!(
+					return Err(Error::BadRPC(format!(
 						"Add --yes flag to really perform this operation"
 					)));
 				}
@@ -233,7 +230,7 @@ impl AdminRpcHandler {
 			.await?
 			.filter(|b| !b.deleted)
 			.map(Ok)
-			.unwrap_or(Err(Error::BadRequest(format!(
+			.unwrap_or(Err(Error::BadRPC(format!(
 				"Bucket {} does not exist",
 				bucket
 			))))
@@ -246,7 +243,7 @@ impl AdminRpcHandler {
 			.await?
 			.filter(|k| !k.deleted)
 			.map(Ok)
-			.unwrap_or(Err(Error::BadRequest(format!("Key {} does not exist", id))))
+			.unwrap_or(Err(Error::BadRPC(format!("Key {} does not exist", id))))
 	}
 
 	async fn update_bucket_key(
@@ -306,7 +303,7 @@ impl AdminRpcHandler {
 
 	async fn handle_launch_repair(self: &Arc<Self>, opt: RepairOpt) -> Result<AdminRPC, Error> {
 		if !opt.yes {
-			return Err(Error::BadRequest(format!(
+			return Err(Error::BadRPC(format!(
 				"Please provide the --yes flag to initiate repair operations."
 			)));
 		}
diff --git a/src/model/block.rs b/src/model/block.rs
index af8b9efb..4e8bb7d9 100644
--- a/src/model/block.rs
+++ b/src/model/block.rs
@@ -123,7 +123,7 @@ impl BlockManager {
 			Message::PutBlock(m) => self.write_block(&m.hash, &m.data).await,
 			Message::GetBlock(h) => self.read_block(h).await,
 			Message::NeedBlockQuery(h) => self.need_block(h).await.map(Message::NeedBlockReply),
-			_ => Err(Error::BadRequest(format!("Unexpected RPC message"))),
+			_ => Err(Error::BadRPC(format!("Unexpected RPC message"))),
 		}
 	}
 
diff --git a/src/rpc/membership.rs b/src/rpc/membership.rs
index d19c1eb7..697cddd0 100644
--- a/src/rpc/membership.rs
+++ b/src/rpc/membership.rs
@@ -373,7 +373,7 @@ impl System {
 					Message::AdvertiseNodesUp(adv) => self2.handle_advertise_nodes_up(&adv).await,
 					Message::AdvertiseConfig(adv) => self2.handle_advertise_config(&adv).await,
 
-					_ => Err(Error::BadRequest(format!("Unexpected RPC message"))),
+					_ => Err(Error::BadRPC(format!("Unexpected RPC message"))),
 				}
 			}
 		});
diff --git a/src/rpc/rpc_server.rs b/src/rpc/rpc_server.rs
index 4386d733..4113f15b 100644
--- a/src/rpc/rpc_server.rs
+++ b/src/rpc/rpc_server.rs
@@ -61,7 +61,10 @@ where
 			let err_str = format!("{}", e);
 			let rep_bytes = rmp_to_vec_all_named::<Result<M, String>>(&Err(err_str))?;
 			let mut err_response = Response::new(Body::from(rep_bytes));
-			*err_response.status_mut() = e.http_status_code();
+			*err_response.status_mut() = match e {
+				Error::BadRPC(_) => StatusCode::BAD_REQUEST,
+				_ => StatusCode::INTERNAL_SERVER_ERROR,
+			};
 			warn!(
 				"RPC error ({}): {} ({} ms)",
 				name,
diff --git a/src/table/table.rs b/src/table/table.rs
index 9d43a475..2beac3f4 100644
--- a/src/table/table.rs
+++ b/src/table/table.rs
@@ -329,7 +329,7 @@ where
 					.await?;
 				Ok(TableRPC::SyncRPC(response))
 			}
-			_ => Err(Error::BadRequest(format!("Unexpected table RPC"))),
+			_ => Err(Error::BadRPC(format!("Unexpected table RPC"))),
 		}
 	}
 
diff --git a/src/table/table_sync.rs b/src/table/table_sync.rs
index 145b3068..6c0df15b 100644
--- a/src/table/table_sync.rs
+++ b/src/table/table_sync.rs
@@ -474,7 +474,7 @@ where
 				todo.push_back(root_ck);
 			}
 		} else {
-			return Err(Error::BadRequest(format!(
+			return Err(Error::Message(format!(
 				"Invalid respone to GetRootChecksumRange RPC: {}",
 				debug_serialize(root_cks_resp)
 			)));
@@ -530,7 +530,7 @@ where
 					self.send_items(who, items_to_send).await?;
 				}
 			} else {
-				return Err(Error::BadRequest(format!(
+				return Err(Error::Message(format!(
 					"Unexpected response to sync RPC checksums: {}",
 					debug_serialize(&rpc_resp)
 				)));
diff --git a/src/util/error.rs b/src/util/error.rs
index 0ca1afe7..e5dcf654 100644
--- a/src/util/error.rs
+++ b/src/util/error.rs
@@ -54,9 +54,6 @@ pub enum Error {
 	#[error(display = "TOML decode error: {}", _0)]
 	TomlDecode(#[error(source)] toml::de::Error),
 
-	#[error(display = "Timeout: {}", _0)]
-	RPCTimeout(#[error(source)] tokio::time::Elapsed),
-
 	#[error(display = "Tokio join error: {}", _0)]
 	TokioJoin(#[error(source)] tokio::task::JoinError),
 
@@ -66,14 +63,8 @@ pub enum Error {
 	#[error(display = "Remote error: {} (status code {})", _0, _1)]
 	RemoteError(String, StatusCode),
 
-	#[error(display = "Bad request: {}", _0)]
-	BadRequest(String),
-
-	#[error(display = "Forbidden: {}", _0)]
-	Forbidden(String),
-
-	#[error(display = "Not found")]
-	NotFound,
+	#[error(display = "Bad RPC: {}", _0)]
+	BadRPC(String),
 
 	#[error(display = "Corrupt data: does not match hash {:?}", _0)]
 	CorruptData(Hash),
@@ -82,18 +73,6 @@ pub enum Error {
 	Message(String),
 }
 
-impl Error {
-	pub fn http_status_code(&self) -> StatusCode {
-		match self {
-			Error::BadRequest(_) => StatusCode::BAD_REQUEST,
-			Error::NotFound => StatusCode::NOT_FOUND,
-			Error::Forbidden(_) => StatusCode::FORBIDDEN,
-			Error::RPC(_) => StatusCode::SERVICE_UNAVAILABLE,
-			_ => StatusCode::INTERNAL_SERVER_ERROR,
-		}
-	}
-}
-
 impl From<sled::TransactionError<Error>> for Error {
 	fn from(e: sled::TransactionError<Error>) -> Error {
 		match e {
@@ -114,15 +93,3 @@ impl<T> From<tokio::sync::mpsc::error::SendError<T>> for Error {
 		Error::Message(format!("MPSC send error"))
 	}
 }
-
-impl From<std::str::Utf8Error> for Error {
-	fn from(e: std::str::Utf8Error) -> Error {
-		Error::BadRequest(format!("Invalid UTF-8: {}", e))
-	}
-}
-
-impl From<roxmltree::Error> for Error {
-	fn from(e: roxmltree::Error) -> Error {
-		Error::BadRequest(format!("Invalid XML: {}", e))
-	}
-}
author	Alex <alex@adnab.me>	2020-11-08 18:04:52 +0100
committer	Alex <alex@adnab.me>	2020-11-08 18:04:52 +0100
commit	045009da9b7ac4198574bd5aa256c11cfe4ae469 (patch)
tree	d3014cc2739c5a1bce62ff35efc8417b79ff46ef
parent	54166d2a09f488bff080469160d4df6a78db1a3f (diff)
parent	a50fa70d45f8b5af68d23d60c3bac2af4ecceb58 (diff)
download	garage-045009da9b7ac4198574bd5aa256c11cfe4ae469.tar.gz garage-045009da9b7ac4198574bd5aa256c11cfe4ae469.zip